"Silver nanoparticles can bind with double-stranded DNA and, possibly in this way, result in compromised DNA replication fidelity both in vitro and in vivo.
Reporting their findings in the February 2, 2009 online edition of Nanotechnology (Food storage material silver nanoparticles interfere with DNA replication fidelity and bind with DNA), Zhang, a professor at the Teda Bio-X Center for Systems Biotechnology at Tianjin University of Science and Technology, and his collaborators from Tianjin University and Shanghai Jiaotong University found that silver nanomaterials can directly interact with genomes".
Read more here
Nanosilver is currently being used as an antibacterial in food packaging, clothing and other consumer items.
Read more about consumer products containing unregulated nanoparticles (with list of products).